Dual lock system

Abstract

The dual lock system can have a primary lock having a first bolt, a first external access control interface, a handle on an internal face of the door, a first mechanism to control the retraction of the first bolt based on either one of the first external access control interface and the handle, the first mechanism having an actuator which is moveable vertically in response to the activation of the handle; a secondary lock having a second bolt, a second external access control interface, a second mechanism to control the retraction of the second bolt based on the second external access control interface, the second mechanism having a rotary shaft linked to the retraction of the second bolt; a connecting element connected to transfer the vertical movement of the actuator to a rotary movement of the rotary shaft, wherein both the first bolt and the second bolt are retracted upon activation of the handle.

The invention claimed is: 
     
       1. A dual lock system for a door, the dual lock system comprising:
 a primary lock having a first bolt, a first external access control interface, a handle on an internal face of the door, a first mechanism to control the retraction of the first bolt based on an activation of either one of the first external access control interface and the handle, the first mechanism having an actuator which is moveable vertically in response to the activation of the handle; 
 a secondary lock having a second bolt, a second external access control interface, a second mechanism to control the retraction of the second bolt upon activating the second external access control interface, the second mechanism having a rotary shaft linked to the retraction of the second bolt; 
 a connecting element connected between the actuator and the rotary shaft, wherein vertical movement of the actuator is transferred to a rotary movement of the rotary shaft via the connecting element, and both the first bolt and the second bolt are retracted upon activation of the handle; 
 wherein the connecting element has a rod having a first end pivotally connected to a cam, the cam being integral to the rotary shaft. 
 
     
     
       2. The dual lock system of  claim 1  further comprising a housing mounted on the internal face of the door and covering a frame to which the second bolt is extendibly mounted, the second mechanism, the first mechanism, and the connecting element. 
     
     
       3. The dual lock system of  claim 1  wherein the second external access control interface has a combination dial positioned on an external face of the door. 
     
     
       4. The dual lock system of  claim 1  wherein the connecting element further has a slide catch operable to transfer linear force unilaterally between the actuator and the cam. 
     
     
       5. The dual lock system of  claim 4  wherein the slide catch includes a stem made integral to the rod and having a stop at an end thereof, and a connector having an aperture slidingly engaged with the stem, a stop catch adjacent the aperture configured for unilateral engagement with the stop, the connector extending from the stop catch, opposite the stem and connecting to the actuator. 
     
     
       6. The dual lock system of  claim 1  wherein a unilateral mechanical link is provided between the first external access control interface and the internal handle, the unilateral mechanical link transmitting first bolt retraction forces between both the first external access control interface and the internal handle to the first mechanism and first bolt, but not from the first external access control interface to the internal handle. 
     
     
       7. The dual lock system of  claim 1  wherein the internal handle is a turn-lever. 
     
     
       8. The dual lock system of  claim 7  the first external access control interface is a keyhole configured for authenticating a key by allowing rotation of an external handle, wherein said rotation of said external handle is mechanically linked to the first mechanism but not to the internal handle. 
     
     
       9. The dual lock system of  claim 1  wherein the handle is a panic bar. 
     
     
       10. The dual lock system of  claim 1 , wherein the second mechanism includes a knob gear mounted to the rotary shaft of the second mechanism, and a sector gear drivingly engaged to the knob gear, the sector gear being driven in rotation by the cam upon activating either one of the first external access control interface and the handle. 
     
     
       11. A dual lock system for a door, the dual lock system comprising:
 a primary lock having a first bolt, a first external access control interface, a handle on an internal face of the door, a first mechanism to control the retraction of the first bolt based on an activation of either one of the first external access control interface and the handle, the first mechanism having an actuator which is moveable vertically in response to the activation of the handle; 
 a secondary lock having a second bolt, a second external access control interface, a second mechanism to control the retraction of the second bolt upon activating the second external access control interface, the second mechanism having a rotary shaft linked to the retraction of the second bolt; 
 a connecting element connected between the actuator and the rotary shaft, wherein vertical movement of the actuator is transferred to a rotary movement of the rotary shaft via the connecting element, and both the first bolt and the second bolt are retracted upon activation of the handle; 
 wherein the internal handle is a turn-lever and wherein the turn-lever has a cam member made integral thereto and rotatable around a horizontal axis normal to the door, further comprising a sliding member assembly including a fixed member fixed relative to the horizontal axis, and a sliding member slidably mounted to the fixed member for vertical relative movement, the sliding member having a cam receiving feature being engaged upon by the cam member upon rotation of the shaft and driving said vertical relative movement, said actuator being integral to said sliding member. 
 
     
     
       12. The dual lock system of  claim 11  wherein the sliding member is a sliding plate, and the fixed member is a fixed plate, the sliding plate and the fixed plate being slidingly connected to one another via a slider shaft and vertically-oriented slot engagement. 
     
     
       13. The dual lock system of  claim 11 , wherein the actuator is located at an upper end of the sliding member and includes a spring connected at one end to the connecting element via a pivoting arm connected to the sliding member. 
     
     
       14. The dual lock system of  claim 11  further comprising a housing mounted on the internal face of the door and covering a frame to which the second bolt is extendibly mounted, the second mechanism, the first mechanism, and the connecting element. 
     
     
       15. The dual lock system of  claim 11  wherein the second external access control interface has a combination dial positioned on an external face of the door. 
     
     
       16. The dual lock system of  claim 11  wherein a unilateral mechanical link is provided between the first external access control interface and the internal handle, the unilateral mechanical link transmitting first bolt retraction forces between both the first external access control interface and the internal handle to the first mechanism and first bolt, but not from the first external access control interface to the internal handle. 
     
     
       17. A dual lock system for a door, the dual lock system comprising:
 a primary lock having a first bolt, a first external access control interface, a handle on an internal face of the door, a first mechanism to control the retraction of the first bolt based on an activation of either one of the first external access control interface and the handle, the first mechanism having an actuator which is moveable vertically in response to the activation of the handle; 
 a secondary lock having a second bolt, a second external access control interface, a second mechanism to control the retraction of the second bolt upon activating the second external access control interface, the second mechanism having a rotary shaft linked to the retraction of the second bolt; 
 a connecting element connected between the actuator and the rotary shaft, wherein vertical movement of the actuator is transferred to a rotary movement of the rotary shaft via the connecting element, and both the first bolt and the second bolt are retracted upon activation of the handle; 
 wherein the first mechanism further comprises a vertical to horizontal pivot convertor having a cam pivoting in a horizontal plane and configured to trigger a pivoting of the actuator around a horizontal pivot axis. 
 
     
     
       18. The dual lock system of  claim 17  further comprising a housing mounted on the internal face of the door and covering a frame to which the second bolt is extendibly mounted, the second mechanism, the first mechanism, and the connecting element. 
     
     
       19. The dual lock system of  claim 17  wherein the second external access control interface has a combination dial positioned on an external face of the door. 
     
     
       20. The dual lock system of  claim 17  wherein a unilateral mechanical link is provided between the first external access control interface and the internal handle, the unilateral mechanical link transmitting first bolt retraction forces between both the first external access control interface and the internal handle to the first mechanism and first bolt, but not from the first external access control interface to the internal handle.